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On Java 11 SDK builds page we see following errors, all coming due the breaking JDK changes and "old" Mockito we are using. This is most likely decribed in https://github.com/mockito/mockito/issues/1419 and https://github.com/mockito/mockito/issues/1483 Looks like 1419 issue was fixed in 2.19.1 version of Mockito (https://github.com/mockito/mockito/blob/release/2.x/doc/release-notes/official.md), we are still on 2.13 (at least the manifest says that), and Orbit also has 2.13. Also 2.22.1 version claim to have better Java 11 support. Example stack: Mockito cannot mock this class: class org.eclipse.e4.core.services.log.Logger. Mockito can only mock non-private & non-final classes. If you're not sure why you're getting this error, please report to the mailing list. Java : 11 JVM vendor name : Oracle Corporation JVM vendor version : 11+28 JVM name : OpenJDK 64-Bit Server VM JVM version : 11+28 JVM info : mixed mode OS name : Linux OS version : 3.10.0-327.10.1.el7.x86_64 Underlying exception : java.lang.UnsupportedOperationException: Cannot define class using reflection org.mockito.exceptions.base.MockitoException: Mockito cannot mock this class: class org.eclipse.e4.core.services.log.Logger. Mockito can only mock non-private & non-final classes. If you're not sure why you're getting this error, please report to the mailing list. Java : 11 JVM vendor name : Oracle Corporation JVM vendor version : 11+28 JVM name : OpenJDK 64-Bit Server VM JVM version : 11+28 JVM info : mixed mode OS name : Linux OS version : 3.10.0-327.10.1.el7.x86_64 Underlying exception : java.lang.UnsupportedOperationException: Cannot define class using reflection at org.eclipse.e4.ui.tests.workbench.ModelAssemblerFragmentOrderingTests.setup(ModelAssemblerFragmentOrderingTests.java:84) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.junit.runners.Suite.runChild(Suite.java:128) at org.junit.runners.Suite.runChild(Suite.java:27) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at org.junit.runner.JUnitCore.run(JUnitCore.java:115) at org.junit.vintage.engine.execution.RunnerExecutor.execute(RunnerExecutor.java:39) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133) at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at org.junit.vintage.engine.VintageTestEngine.executeAllChildren(VintageTestEngine.java:79) at org.junit.vintage.engine.VintageTestEngine.execute(VintageTestEngine.java:70) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:220) at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:188) at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:202) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:181) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128) at org.eclipse.test.EclipseTestRunner.runTests(EclipseTestRunner.java:291) at org.eclipse.test.EclipseTestRunner.run(EclipseTestRunner.java:267) at org.eclipse.test.CoreTestApplication.runTests(CoreTestApplication.java:41) at org.eclipse.test.CoreTestApplication.run(CoreTestApplication.java:37) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.internal.app.EclipseAppContainer.callMethodWithException(EclipseAppContainer.java:592) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:205) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:391) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:246) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:595) at org.eclipse.equinox.launcher.Main.run(Main.java:1501) at org.eclipse.equinox.launcher.Main.main(Main.java:1474) at org.eclipse.core.launcher.Main.main(Main.java:37) Caused by: java.lang.UnsupportedOperationException: Cannot define class using reflection at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$Unavailable.defineClass(ClassInjector.java:821) at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection.inject(ClassInjector.java:185) at net.bytebuddy.dynamic.loading.ClassLoadingStrategy$Default$InjectionDispatcher.load(ClassLoadingStrategy.java:187) at net.bytebuddy.dynamic.TypeResolutionStrategy$Passive.initialize(TypeResolutionStrategy.java:79) at net.bytebuddy.dynamic.DynamicType$Default$Unloaded.load(DynamicType.java:4456) at org.mockito.internal.creation.bytebuddy.SubclassBytecodeGenerator.mockClass(SubclassBytecodeGenerator.java:121) at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator$1.call(TypeCachingBytecodeGenerator.java:37) at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator$1.call(TypeCachingBytecodeGenerator.java:34) at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:138) at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:346) at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:161) at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:355) at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator.mockClass(TypeCachingBytecodeGenerator.java:32) at org.mockito.internal.creation.bytebuddy.SubclassByteBuddyMockMaker.createMockType(SubclassByteBuddyMockMaker.java:71) at org.mockito.internal.creation.bytebuddy.SubclassByteBuddyMockMaker.createMock(SubclassByteBuddyMockMaker.java:42) at org.mockito.internal.creation.bytebuddy.ByteBuddyMockMaker.createMock(ByteBuddyMockMaker.java:25) at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:35) at org.mockito.internal.MockitoCore.mock(MockitoCore.java:65) at org.mockito.Mockito.mock(Mockito.java:1821) at org.mockito.Mockito.mock(Mockito.java:1734) ... 69 more Caused by: java.lang.IllegalStateException: Could not find sun.misc.Unsafe at net.bytebuddy.dynamic.loading.ClassInjector$UsingUnsafe$Dispatcher$Disabled.initialize(ClassInjector.java:1357) at net.bytebuddy.dynamic.loading.ClassInjector$UsingUnsafe.inject(ClassInjector.java:1193) at net.bytebuddy.dynamic.loading.ClassLoadingStrategy$ForUnsafeInjection.load(ClassLoadingStrategy.java:458) at net.bytebuddy.dynamic.TypeResolutionStrategy$Passive.initialize(TypeResolutionStrategy.java:79) at net.bytebuddy.dynamic.DynamicType$Default$Unloaded.load(DynamicType.java:4456) at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$Indirect.make(ClassInjector.java:684) at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$CreationAction.run(ClassInjector.java:302) at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$CreationAction.run(ClassInjector.java:290) at java.base/java.security.AccessController.doPrivileged(Native Method) at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection.<clinit>(ClassInjector.java:70) at net.bytebuddy.dynamic.loading.ClassLoadingStrategy$Default$InjectionDispatcher.load(ClassLoadingStrategy.java:184) at net.bytebuddy.dynamic.TypeResolutionStrategy$Passive.initialize(TypeResolutionStrategy.java:79) at net.bytebuddy.dynamic.DynamicType$Default$Unloaded.load(DynamicType.java:4456) at org.mockito.internal.creation.bytebuddy.SubclassBytecodeGenerator.mockClass(SubclassBytecodeGenerator.java:121) at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator$1.call(TypeCachingBytecodeGenerator.java:37) at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator$1.call(TypeCachingBytecodeGenerator.java:34) at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:138) at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:346) at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:161) at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:355) at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator.mockClass(TypeCachingBytecodeGenerator.java:32) at org.mockito.internal.creation.bytebuddy.SubclassByteBuddyMockMaker.createMockType(SubclassByteBuddyMockMaker.java:71) at org.mockito.internal.creation.bytebuddy.SubclassByteBuddyMockMaker.createMock(SubclassByteBuddyMockMaker.java:42) at org.mockito.internal.creation.bytebuddy.ByteBuddyMockMaker.createMock(ByteBuddyMockMaker.java:25) at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:35) at org.mockito.internal.MockitoCore.mock(MockitoCore.java:65) at org.mockito.Mockito.mock(Mockito.java:1821) at org.mockito.Mockito.mock(Mockito.java:1734) at org.eclipse.e4.ui.workbench.renderers.swt.ThemeDefinitionChangedHandlerTest.testHandleEventWhenThemeChanged(ThemeDefinitionChangedHandlerTest.java:66) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) ... 60 more Caused by: java.lang.NoSuchMethodException: sun.misc.Unsafe.defineClass(java.lang.String, [B, int, int, java.lang.ClassLoader, java.security.ProtectionDomain) at java.base/java.lang.Class.getMethod(Class.java:2109) at net.bytebuddy.dynamic.loading.ClassInjector$UsingUnsafe$Dispatcher$CreationAction.run(ClassInjector.java:1260) at net.bytebuddy.dynamic.loading.ClassInjector$UsingUnsafe$Dispatcher$CreationAction.run(ClassInjector.java:1248) at java.base/java.security.AccessController.doPrivileged(Native Method) at net.bytebuddy.dynamic.loading.ClassInjector$UsingUnsafe.<clinit>(ClassInjector.java:1127) ... 95 more
*** This bug has been marked as a duplicate of bug 539947 ***
